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Taxonomy
Family:
HYRIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Palaeoheterodonta (Subclass)
> Unionoida (Order)
> Hyrioidea (Superfamily)
> Hyriidae (Family)
> Echyridella (Genus)
> aucklandica (Species)
Synonymised Names:
=Cucumerunio websteri (Simpson, 1902)
=Cucumerunio websteri delli McMichael & Hiscock, 1958
=Diplodon (Hyridella) menziesi lucasi Suter, 1905
=Diplodon menziesii lucasi Suter, 1905
=Diplodon websteri Simpson, 1902
=Echyridella lucasi (Suter, 1905)
=Hyridella aucklandica (Gray, 1843)
=Unio aucklandicus Gray, 1843
Images: Echyridella aucklandica (Gray, 1843)
Henderson, West Auckland, NZ. 80mm
(websteri form) - From south of Auckland. 62mm
(delli form) - From a stream north of Auckland, NZ. 66mm
Taxonomy
Family:
HYRIIDAE
Full Classification:
Mollusca (Phylum)
> Bivalvia (Class)
> Palaeoheterodonta (Subclass)
> Unionoida (Order)
> Hyrioidea (Superfamily)
> Hyriidae (Family)
> Echyridella (Genus)
> aucklandica (Species)
Synonymised Names:
=Cucumerunio websteri (Simpson, 1902)
=Cucumerunio websteri delli McMichael & Hiscock, 1958
=Diplodon (Hyridella) menziesi lucasi Suter, 1905
=Diplodon menziesii lucasi Suter, 1905
=Diplodon websteri Simpson, 1902
=Echyridella lucasi (Suter, 1905)
=Hyridella aucklandica (Gray, 1843)
=Unio aucklandicus Gray, 1843
Details: Echyridella aucklandica (Gray, 1843)
Size/Grows to:
Length 107mm, Height 48mm
Distribution:
North Island. From Kaeo in the north, Auckland, Waikato to Wanganui and Lake Wairarapa. South Island, from Lake Manapouri to Lake Hauroko
Geographical Range:
Fw.N.S.
Notes:
Freshwater Mussel, Freshwater, Native - Endemic
Distribution Map
 
References and Publications
  • Marshall, B.A., Fenwick, M.C., Ritchie, P.A. 2014 New Zealand Recent Hyriidae (Mollusca: Bivalvia: Unionida), Molluscan Research, 34(3) (p.193)
  • Fenwick, M.C., Marshall, B.A. 2006 A new species of Echyridella from New Zealand, and recognition of Echyridella lucasi (Suter, 1905) (Mollusca: Bivalvia: Hyriidae), Molluscan Research, 26(2) (p.73)
  • Crosby, D.D. Jan/1983 Lake Waahi - Cucumerunio websteri websteri (Simpson, 1902), Poirieria, 12(1) (p.12)
  • Powell, A.W.B. 1979 New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.385)
  • Gray, J.E. 1843 Catalogue of the species of Mollusca and their shells, which have hitherto been recorded as found at New Zealand, with the description of some lately discovered species, Travels in New Zealand; with contributions to the geography, geology, botany, and natural history of that country, 2 (p.257) Original Description

*98 © Museum of New Zealand Te Papa Tongarewa (CC-BY-NC-ND)

Key to Geographical Ranges
NZ Map showing Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species. They have been adopted to give an approximation of the range of each species within New Zealand.
K=
Kermadec Islands
A=
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
C=
Cookian - Lower North Island and the northern part of the South Island
F=
Forsterian - Otago, Fiordland and Stewart Island
M=
Moriorian - Chatham Islands, Pitt Island
An=
Antipodean - Subantarctic Islands of New Zealand
Fw =
Freshwater
L =
Land
N =
North Island
S =
South Island
R =
Recent
Sf =
Subfossil
Fo =
Fossil